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Cerulean
#3488d0

#3488d0
Primary red
34₁₆ = 52
52/255 ≈ 20 %
Primary green
88₁₆ = 136
136/255 ≈ 53 %
Primary blue
D0₁₆ = 208
208/255 ≈ 82 %
Basic colors
52/255 ≈ 20 % 84/255 ≈ 33 % 72/255 ≈ 28 % 47/255 ≈ 18 %